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題名 | 最大等速向心收縮對女大學生心跳率之效應=Heart Rate Response to Maximal Isokinetic Concentric Contractions in College Females Students |
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作者 | 呂欣善; 黃惠芬; 陳相榮; |
期刊 | 國立臺灣體育學院學報 |
出版日期 | 20010100 |
卷期 | 8 2001.01[民90.01] |
頁次 | 頁205-216 |
分類號 | 528.9013 |
語文 | chi |
關鍵詞 | 最大等速向心收縮; 女大學生; 心跳率; |
中文摘要 | 本研究之目的在於探討最大等速向心收縮運動對心跳率之應。受測者為十八名國立臺灣體學院女性大學生(年齡=20.5±1.9歲;身高=163.7±8.5公分;體重=65.8±12.1公斤;身體質量指數=24±0.5;安靜心跳率=69±7次/分)為實驗對象。利用等速收縮器(Cybex Norm)以隨機參與膝關節被動伸展/屈曲動作速度120°/s主動膝關節運動以60°/s或120°/s速度進行最大等速向心伸展/屈曲收縮各30次作為運動測驗。而在每次運動測驗中,每收縮5次時以心跳率遙測計(Polar Heart Rate Monitor)紀綠其心跳率,並在測試後的3、5、15、30分童之內紀綠其恢復的心跳值。實驗結果顯示,主動膝關節伸展/屈曲後心跳率顯著高於安靜心跳率及膝關節被動伸展/ 屈曲測驗。60°/s主動膝關節伸展/屈曲心跳率增加高於120°/s運動後心跳率。此外被動式膝關節伸展/屈曲測驗後心跳率沒有變化。本研究發現30次最大主動膝關節等速伸展/展曲運動可引發心跳率上升至估算最大心跳率70%。在高收縮速度時心跳率上升較快,而在較低收縮速度時心跳率峰值較高。此結果與高強度肌肉收縮及較長運動時間而導致交感神經興奮而使心跳率上升。因此進行最大等速抗阻運動時,收縮速度是引發心跳加速象之因素。 |
英文摘要 | The purpose of this study was to determine the heart rate responses to acute isokinetic contractions. Eighteen female students of National College of Physical Education (Aged=20.5±1.9yrs; Height-163.7±8.5cm; Weight=65.8±12.1kg; Body mass index-24±0.5, Resting Heart Rate=69±7 beats/min) took part in the test. Using a dynamometer (Cybex Norm), subjects were randomly assigned to perform exercise test consisting of a passive movement speed of 120°/s and 30 maximal knee extension/flexion at 60°/s or 120°/s. Heart rate was recorded (Polar heart rate telemetry) every five repetitions and after 3,5,15,30 min following exercise test The results shows that The knee extension and flexion exercise induced heart rat was significantly higher in 60°/s and 120°/s (p<0.05) as compared to passive movement and resting values. There was also no significant difference in passive. The important results is increasing heart rate cause of knee extension/flexion exercise and faster raise in heart rate in lower speed but reach higher peak during faster speed. Resulting finding indicate that intense muscular effort stimulates sympathetic response and an accelerated heart rate occurs. Thus contracting speed of isokientic resistance exercise is the factor influence heart rate. |
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